
Star profile
Rho Capricorni
What is Rho Capricorni
Rho Capricorni is a binary system where a yellow-white F subgiant shines alongside an eighth-magnitude companion, separated by at least thirty astronomical units. The main star carries one and a half times the Sun's mass, a surface near 7,000 degrees and around 1.5 billion years of life. At 99 light-years she rests on the back of the Sea Goat, an ancient zodiacal symbol of the winter solstice.
Where it is and when to see it
Rho Capricorni lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is July, when it culminates around midnight.
- From London it culminates about 21° above the horizon.
- From New York it culminates about 31° above the horizon.
- From Sydney it culminates about 74° above the horizon.
It can be seen from anywhere south of 72° N.
It ranks no. 16 in brightness among the 48 stars of Capricornus in our catalogue. To find it, start from Deneb Algedi, the brightest: it lies about 19° away (a fist at arm's length covers about 10°).
The light you see today left it about 99 years ago.
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Astronomical data for Rho Capricorni
- Constellation
- Capricornus
- Apparent magnitude
- 4.77
- Distance
- 98.7 light years
- Coordinates (J2000)
- RA 307.215° · Dec -17.814°
- Catalogue
- HIP 101027 · HD 194943
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Other stars in Capricornus
Capricornus has 48 stars in Stelvia's catalogue. Here are a few of them.
- Deneb AlgediDelta Capricorni2.85
- DabihBeta Capricorni3.05
- AlgediAlpha 2 Capricorni3.58
- Epsilon Capricorni4.51
- Kappa Capricorni4.72
- AlshatNu Capricorni4.77
- Eta Capricorni4.82
- Pi Capricorni5.08